Fix local run freshness and plugin asset handling

platform/service/distributions_test.go

@@ -199,10 +199,25 @@ func TestCoreServiceDistributionBuildIgnoresStaleRunEndpoint(t *testing.T) {
 	if err != nil {
 		t.Fatalf("get runtime actions: %v", err)
 	}
+	if actions.RunStatus != domain.RunEndpointStatusOffline {
+		t.Fatalf("stale Run endpoint must project offline runtime status, got %+v", actions)
+	}
+	staleRunGated := map[string]bool{"dependencies-check": false, "dependencies-install": false, "live-logs": false}
 	for _, action := range actions.Actions {
 		if action.Key == "generate-run" && !action.Available {
 			t.Fatalf("stale Run endpoint must not gate platform build availability: %+v", action)
 		}
+		if _, gated := staleRunGated[action.Key]; gated {
+			staleRunGated[action.Key] = true
+			if action.Available || action.Reason != "Run heartbeat has not been observed" {
+				t.Fatalf("stale Run endpoint must gate runtime action %s, got %+v", action.Key, action)
+			}
+		}
+	}
+	for key, seen := range staleRunGated {
+		if !seen {
+			t.Fatalf("expected stale Run gating action %s in %+v", key, actions.Actions)
+		}
 	}
 }